The expansion of the Mini family marches forward relentlessly, but while the range typically grows with more bodystyles, the latest addition stands to transcend configurations with a new engine.

Although it likely won’t be offered Stateside, rumor has it that Mini is preparing to launch a new high-performance diesel engine at the upcoming Geneva Motor Show in March. The cars fitted with it are reportedly set to carry the SD designation (combining the S from the top-spec gasoline engine with the D from the existing diesel).

Details have yet to be announced, but reports indicate it could be a 2.0-liter turbodiesel with 143 horsepower and as much as 225 lb-ft of torque. That torque number would emphatically surpass the torque figures produced by any of the existing Mini engines – even the JCW on overboost.